![](https://i.insider.com/57582da752bcd0210c8c7a96?width=500&format=jpeg&auto=webp)
Also, anyone here knows how many tracer ammunition colours are there? I've heard of red and green, and I think also a blue one, but so far I don't know anything else.
[@CaptainXtra](/forums/generals/topics/gun-discussion?post_id=5245449#post_5245449)
Hi, I'm not entirely sure what you exactly mean (Like, I'm imagining you're referring to some sort of awkward M-16+AA-12 Frankenstein kind of thing from a game that fires both rounds from a single drum magazine), but there are guns that can fire both shotgun rounds and rifle rounds; they're called [Combination guns](https://en.m.wikipedia.org/wiki/Combination_gun), they're often break-action and you have to manually load the shotgun shell and the rifled bullet after firing, which I'm not sure it's the thing you're asking for.
Aside from that, I think you can technically fire shotgun shells from rifled guns, as far [as this Quora question](https://www.quora.com/Is-there-a-rifle-that-can-shoot-shotgun-shells-and-a-regular-round-or-a-shotgun-that-can-shoot-rifle-rounds) and it's replies implies.
Other than that, there are underbarrel extensions for M4s and M16s that are basically ancillary shotgun weapons, the [M26 MASS](https://en.m.wikipedia.org/wiki/M26_Modular_Accessory_Shotgun_System) is probably the closest I know to what you might be thinking, and there's also others like the [KAC Masterkey](https://en.m.wikipedia.org/wiki/Knight%27s_Armament_Company_Masterkey), which is like a Remington strapped under a rifle.
And well... There are [slug rounds](https://en.m.wikipedia.org/wiki/Shotgun_slug) for shotguns, which might kinda look like regular bullets because unlike other shells this thing is a big, single bullet that smashes things. So I'm not sure if you might be talking about some gun that fires these.
So, it's not technically unfeasible I think...